Finally! Our rating system is there! We computed player ratings based on all tournaments from the past two years, a total of around 1700 games. You can now compare your rating with others and see where you stand!

The rest of this post will contain some basic information about the rating system. We will also include some statistics etc. 🙂

First things first, a couple of questions you might have when you see the ratings:

Who is included in the leaderboard?

Only players that played at least one tournament in the last year are included on the leaderboard.

Who is "anonymous"?

Anonymous players are players who only played before the ETH Chess Championship in 2024. Since we did not ask for permission to publish names in the leaderboard before this tournament, we did not include their names.

Why can I not see my name?

You have not played a tournament in the last academic year or you did not play after the ETH Chess Championship. If the latter is the case, you can contact us and we will de-anonymize your name on the leaderboard.

Why is there a question mark behind my rating?

You have played less than 12 games in our tournaments. Your rating is therefore considered provisional.

Can you please exclude my name from the leaderboard?

Of course! Just contact us and we will remove your name!

Where can I register a rated game played during a casual event?

Easy! Just fill in the form on this page: https://schwarzerkonig/rated-game/

Okay, apart from those question, there are a couple more things I want to tell you about the ratings before you can dive into them 🙂

Yes, your rating can change even if you did not play in the last tournament.

Since players do not play a lot of games, we have to be a bit smarter about our rating system than usual. This means that when deciding on the new rating, our system also looks back and retroactively changes your rating. For example, if the opponent that beat you last time suddenly gains a lot of rating in the new tournament, you will get some rating back as well!

No, do not compare your rating with your Lichess/Chess.com/FIDE Rating.

You should only compare your Polyrating with other Polyratings. It is not supposed to mimic any other rating system.

Rank	Name	Rating	Wins	Losses	Draws
1	Theo Stijve	2361	46	4	5
2	Noah Fecker	2328	14	1	1
3	Joly Julien	2281	13	2	1
4	Nidal Hevi Oğur	2276 (?)	7	0	0
5	Olivier Tschopp	2241	24	2	4
6	Vincent Lou	2192	34	9	1
7	Anton Hul	2190	50	10	6
8	Kirill Zaitsev	2189	32	7	6
9	Amirali Delavari	2105 (?)	6	1	0
10	Aleksandrs Saveljevs	2021 (?)	5	1	1
11	Márk Süket	2014 (?)	4	1	2
12	Michael Bühler	2012 (?)	6	3	0
13	Sinan Deveci	2007	25	9	0
14	Tamerlan Begdullayev	2004 (?)	5	2	2
15	Nicolás Piro	2003 (?)	4	1	2
16	Milko Bakalov	1996	13	5	3
17	Guo bo kai owen	1966 (?)	5	1	1
18	Luca Valsecchi	1949 (?)	4	1	2
19	Jonas Menzi	1948 (?)	5	2	2
20	Davide Guidobene	1943	8	3	1
21	Gleb Krivovyaz	1936 (?)	5	4	0
22	Ruslan Shumilov	1933	10	4	1
23	Yun Pan	1931	68	28	6
24	Max Newsome	1913	38	17	3
25	Yven Kius	1899	23	10	3
26	Philip Christoph	1887 (?)	5	4	0
27	Alex Meili	1869 (?)	3	2	2
28	Hongwei Zheng Shi	1867 (?)	5	2	0
29	Batuhan Iliev	1865 (?)	4	2	1
30	Claudio Boegli	1857 (?)	3	2	2
31	Evan Quistad	1856 (?)	5	4	0
32	Calvin Chiu	1853	9	2	3
33	Lorenzo Vettor	1844	41	18	4
34	Florian Stäuble	1836	9	5	0
35	Chaojie Li	1831	12	8	4
36	Jair Gutierrez Reyes	1826 (?)	4	3	0
37	Menderes Eroglu	1802	22	11	3
38	Jasper Dekoninck	1801	15	7	4
39	Hongwei Zheng	1784	14	8	1
40	Philip Olson	1774	16	10	2
41	Writabrata Roy	1767 (?)	5	2	0
42	Ved Bhatawadekar	1766	8	6	0
43	Nils Koltzenburg	1763	8	7	1
44	Maywand Akhtari	1760 (?)	5	2	0
45	Ramona Golsta	1756 (?)	3	2	2
46	Gary Hoppeler	1745	23	13	2
47	Johannes Reiner	1722 (?)	4	1	2
48	Dorian Quelle	1719	36	24	3
49	Max Baharev	1707	8	7	1
50	Máté Süket	1706 (?)	4	2	1
51	Federico Guglielmotti	1664	29	19	3
52	Tim Vaughan-Whitehead	1654	20	15	1
53	Giulio Abreu	1647 (?)	4	3	0
54	Mark Shen	1645	14	14	2
55	Lawrence Scafuri	1641	16	12	9
56	Anton De Ruig	1621	14	11	2
57	Julien Delattre	1621	8	8	4
58	Joly Fabrice	1611 (?)	4	5	0
59	Vid Bhatawabekar	1606 (?)	3	3	0
60	Ana Marija Vego	1590	37	33	4
61	Alexandre Terrail	1590	19	17	3
62	Krithik Chockalingam	1572	8	6	0
63	Jesus Jair Reyes Gutierrez	1565	11	10	0
64	Lubin Lee	1565 (?)	2	2	3
65	Frehner Thomas	1546	14	16	0
66	Igor pradhan	1545 (?)	6	5	0
67	Onno Riedel	1534	19	20	1
68	Alexander Gibbert	1532 (?)	5	4	0
69	Simon von Siebenthal	1529	7	7	0
70	Giulio Tamburi	1529 (?)	3	4	2
71	Brian Lin	1522 (?)	4	3	0
72	Mehmet Arslan	1520 (?)	4	3	0
73	Denis Hallulli	1515 (?)	4	4	0
74	Emilio Grandinetti	1513	19	23	1
75	Uri Kreitner	1508 (?)	2	3	0
76	Mert Yaroglu	1508 (?)	2	3	2
77	Gabrielmario Tavini	1508 (?)	3	4	0
78	Tom Crossley	1497	7	7	0
79	Luwai Appels	1492	6	6	2
80	Raghu Raman Ravi	1490	8	8	0
81	Oliver Rutkowski	1487	12	13	0
82	Silas Tapernoux	1482 (?)	3	3	1
83	Marcell Gabor Meszaros	1480	6	7	1
84	Jorin Strahl	1475	8	11	2
85	Fabian Schmid	1473 (?)	3	4	0
86	Sander de Haan	1471 (?)	2	3	2
87	Zoran Dragnic	1467	17	22	3
88	Chris Hartl	1460	8	12	1
89	Neryvaldo Galvao	1456	23	31	2
90	Popovici Liviu Daniel	1443 (?)	4	5	0
91	Santiago Llobell Bartret	1443 (?)	3	3	1
92	Béla Imre Kammermann	1430	7	7	0
93	Alex	1427 (?)	3	3	0
94	Boris Ivanov	1426 (?)	3	4	0
95	Roy Liu	1419 (?)	3	6	0
96	Giovanni Ottoboni	1412	14	21	1
97	Bryan Antony	1408 (?)	3	4	0
98	Laurent Zheng	1402 (?)	2	4	0
99	Luis felipe prates cattelan	1400	10	9	2
100	Viktor Heitmann	1391 (?)	3	4	0
101	Pablo Petersen	1369	5	7	1
102	Vlad Ciuleanu	1364	7	8	0
103	Raffaele Lanini	1363	5	9	2
104	Christoph Ribbe	1358	5	6	3
105	Lorenzo Benedetti	1348	4	8	1
106	Isabel Andrea Almasan	1345 (?)	3	4	0
107	Nahin Kahn	1345 (?)	3	3	0
108	Mirco Paul	1341	8	14	0
109	Felix Kloer	1340 (?)	3	4	0
110	Yann Spillmann	1337	16	31	3
111	Florian Landis	1335	4	9	0
112	Younes Mouhib	1331	7	14	0
113	Adela Ioana Popon	1325 (?)	3	4	0
114	Andreas Buchheit	1323 (?)	3	3	1
115	Ilia Moghayer	1322 (?)	2	4	1
116	Huaiqian Liu	1320 (?)	2	6	1
117	Benedikt Leonard Stefan Gebhard	1317 (?)	3	4	0
118	Benedikt Hemp	1314 (?)	3	4	0
119	Ricard Pozo Guti	1305 (?)	2	5	0
120	David Wermuth	1302 (?)	2	5	0
121	Konstantinos Kiori	1298 (?)	3	4	0
122	Leopold Reigl	1292	7	13	2
123	Martin Soldani	1292	12	22	1
124	Julius Wendland	1289 (?)	2	5	0
125	Gabriela Maciak	1284 (?)	3	6	0
126	Rhea Fischer	1275 (?)	3	4	0
127	Diana Begdullayeva	1251 (?)	2	7	0
128	Daniele Bellezza	1245 (?)	2	5	0
129	Karina Begdullayeva	1241 (?)	2	6	0
130	Aurele Delvart	1233 (?)	3	4	0
131	Noé Stammbach	1223	4	14	1
132	Jonas Tibisch	1219 (?)	3	4	0
133	Ziya teleti	1208	7	13	0
134	Eduarda Assuncao	1205	3	10	0
135	Manthan Gadhia	1188 (?)	3	4	0
136	Anton Hensel	1162 (?)	2	5	0
137	Philippe Walcher	1160 (?)	1	5	1
138	Fabian Egger	1154 (?)	1	5	1
139	Alex Savca	1146 (?)	2	5	0
140	Ruslan Pichuk	1145 (?)	2	4	0
141	Laura Alilovic	1136	7	17	0
142	Giorgos Zachariou	1126 (?)	2	5	0
143	Robin Rudin	1111 (?)	2	4	1
144	Ilie-Daniel Apostol	1065 (?)	1	5	0
145	Merlin Weiss	1043 (?)	2	5	0
146	Lukas Kaldune	964 (?)	1	5	1
147	Lenny Schürch	886 (?)	0	5	0
148	Tudor-Stefan Magirescu	873 (?)	0	6	0
149	Finn-Moritz Heller	848 (?)	0	6	0
150	Emanuel Frank	814	2	11	0
151	Sarah Morach	803 (?)	0	6	0
152	benjamin dropmann	571 (?)	0	7	0

A (small) analysis of the ratings

I will not dive into the mathematical details of the rating system here. In case you are interested, the rating system follows this paper with some additional improvements for speed and stability purposes. Our code base is available here.

Since plots say more than a 1000 words, let’s just look at some plots 🙂 Below, you can see three plots. The first shows the distribution over ratings and the second shows the win rate by color. The last plot shows the likelihood that you win a game based on the rating difference with your opponent. You can see both the observed probability (based on our games) and the one predicted by the rating system.